 A positive capsule review in the "Los Angeles Times" noted that the authors use logic to point out transparencies in the assertions of Transcendental Meditation.John Horgan, in his book "Rational Mysticism", questions Persinger's neutrality and says that in his book he treats religious beliefs and spiritual practices as mental illness.Michael Persinger is a neurophysiologist who has worked at Laurentian University in Greater Sudbury, Ontario, Canada.